An engine has a hot reservoir temperature of 925 K and a cold reservoir temperat

Question

An engine has a hot reservoir temperature of 925 K and a cold reservoir temperature of 648 K. The engine operates at three-fourths maximum efficiency. What is the efficiency of the engine? Incorrect. Tries 9/10 Previous Tries An engine has a hot reservoir temperature of 925 K and a cold reservoir temperature of 648 K. The engine operates at three-fourths maximum efficiency. What is the efficiency of the engine? Incorrect. Tries 9/10 Previous Tries An engine has a hot reservoir temperature of 925 K and a cold reservoir temperature of 648 K. The engine operates at three-fourths maximum efficiency. What is the efficiency of the engine? Incorrect. Tries 9/10 Previous Tries

Explanation / Answer

SOLUTION: From the question we have

An engine has a hot reservoir temperature of 925 K and a cold reservoir temperature of 648 K

The engine operates at three-fourths maximum efficiency

To find:What is the efficiency of the engine?

Carnot Cycle Efficiency = (Th - Tc)/Th = (925 - 648)/925 = 0.299

Engine Efficiency = 3/4 x 0.299 = 0.22 = 22% ANS

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